How to prune tidal wave silver petunia

Midsummer (July) for trim; deadhead as needed throughout growing season. Cut the longest, barest stems back by one-third to one-half above a leaf node. Fertilise after trimming to support the surge of new growth and renewed flowering that follows within two to three weeks.

Once or twice per season; deadhead as needed. Tidal Wave petunias grow vigorously and can spread very widely; trimming wayward stems controls spread and keeps plants bushy. Cut back long trailing stems by one-third to one-half in midsummer when flowering slows or stems become bare. Regular deadheading improves the display but is not essential for this robust cultivar.

Cut the longest, barest stems back by one-third to one-half above a leaf node. Fertilise after trimming to support the surge of new growth and renewed flowering that follows within two to three weeks.